Insulator wall-bracket.



J. B. McCARTHY.

INSULATOR WALL BRACKET.

APPLICATION FILED MAR. a1, 1916.

Patented May 8, 1917.

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INVENTOR 6 726 z E F 2 V E A 545 a. a 9

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smarts JAMIES IlECCAR'I'HY, OF BIRll/Ilhl lF,

SYLVAHEA.

IVEIGEIGAN, ASSIGNOR TO NATIONAL METAL llfitl'LDILit'G CQIEPAN Z, 0E FIT'ES'BU'BJGH, PENNSYLVANIA, 2. GQEPQEATION 01E PENN- ENS'ULATGE WALL-BRACKET.

1,225, still.

Specification of Letters Eatent.

Patented May 2%, 1991?.

Application filed march 31, 1916. Serial No. sac-2e.

To all (whom it may concern:

- Be it known that 1, James B. MCCARTHY, residing at Birmingham, in the county of Oakland and State of Michigan, citizen of the United States, have invented discovered certain new and useful lmprovements in insulator Wall-Brackets, of which improvement the following is a specification.

My invention relates to insulator brackets such, for example, as are attached to the outer walls of buildings and form supports for electrical conductors leading from street mains into buildings. However, do not wish to be understood as limiting my invention to this specific purpose, for the improved bracket which ll provide is well adapted to be used as a support for electrical conductors within buildings, on poles, and in various other places.

The object of my invention is to provide a bracket, which although strong, durable and efficient, is small, inexpensive to manufacture, and inconspicuous when installed. A. further object is to improve the construction of insulators, both with respect to the means for fastening conductors to them, and for attaching the insulators to supports.

In the accompanying sheet of drawings,

' which forms part of my specification, I have illustrated the preferred embodiment of my invention. Figure 1 is a face view of a bracket; Fig. 2 is a sectional view taken on the line ll-Il, Fig.1; and Figs. 3 and 4 are views similar to the left hand portion of Fig. 2, but showing modifications of construction.

The bracket which ll provide comprises essentially a supporting member adapted to be attached to awall or nther desired structure, and insulators detachably connected to such member. As shown in the drawings, the supporting member is preferably an elongate plate 1, rounded at its ends, and provided with a reinforcing rib in the form of a continuous rim or flange 2. The plate is further provided with a series of holes or slots 3 adapted to receive suitable securing members for attaching the bracket to any desired structure, as for example, to the outer wall of a building.

As far as concerns somefeatures of my invention the insulator may be of any desired shape or construction and may be attached to the supporting member in various ways. Preferably, however, I provide an taching member.

' are placed at right angles to each other. As

shown in these figures, the body portion i of each insulator is substantially cylindrical having suitable grooves 5 for the attachment of electrical conductors. To the end that such conductors may not become disconnected, the insulator is provided with a transverse hole 7 extending substantially through the center or axis thereof, and through which the wires or conductors may be threaded. lt will be observed that, by the provision of a hole 7 in the manner described, conductors may be securely attached to the insulator quite regardless of the angle at which the conductor leads to or from the insulator; that is to say, a conductor may approach or leave the insulator in line with the longitudinal axis thereof, or at any angle thereto, and, being passed through'the'hole 7, may be firmly attached to the insulator. As will be seen, grooves 13 are formed in the upper part of the insulator adjacent to the ends of the hole 7, such grooves being for the purpose of receiving conductors leading to or from the insulator at other than right an les thereto.

t opposite sides of the hole 7 there are longitudinally disposed holes 8 adapted to receive a U-bolt 9 or some other form ofat- As. shown in Fig. 2, the legs of the U-bolt extend through suitably provided holes in the plate 1, and nuts 10, screwed upon such legs, hold the insulator firmly in place. It will be observed of this construction that the flange 201 the plate is of sufficient depth to extend beyond the ends of the U-bolt.

In the modification shown in Fig. 3 the U-bolt 9 is inserted from the back of the plate 1 and a suitable' yoke or clamping plate 11 is placed over the ends of the bolt and between the nuts 10 and the insulator body 4*.

In the modification of Fig. 4 the base of holes 12 adapted to be engaged by screws 15,

which in turn extend through a suitable U yoke plate 11?.

According to the provision of the patent operation of my invention together with the construction which I now consider to be the best embodiment thereof. However, Idesire to have it understood that the construction shown is onlyfillustrative and that x my invention may be forms of construction.

I claim as my invention: K

1. An insulator bracket, comprising a supporting meinber provided with holes for attaching an insulator thereto, an insulator provided with a wire-receiving hole extendingsubstantially transversely through the axis thereof and further provided with a pair of longitudinally disposed holes lying one on each'side of said first named hole, an annular groove in the outer surface of said insulator, and an attaching member extending through said pair of holes in the insulator and through said holes of the supporting member, said attaching member clamping the inner end of the insulator to said supporting member.

2. An insulator wall bracket for the attachment and support of electrical conductors,.comprising in combination a supporting member rovided with means for attaching an insulator thereto, a unitary substantially cylindrical insulator provided with an open Wire-receiving hole extending substantiallytransversely through the axis practised by other thereof, and further provided with a pair of longitudinally disposed holes lying one on each side of said first named hole, an annular groove in the outer surface of said insulator in the general plane of said transverse hole, and an attaching member extending through said pair of holes in the insulator and engaging said supporting member and clamping the insulator to said member.

3. An insulator bracket, comprising a supporting member provided with holes for attaching an insulator thereto, an insulator provided with a wire-receiving hole extending substantially transversely through the axis thereof and further provided with a pair of longitudinally disposed holes lying one on each side of said first named hole, an

,annular groove in the outer surface of said insulator and longitudinally disposed grooves extending from said annular groove to the outer end of the insulator, and an attaching member extending through said pair of holes in the insulator and through said holes of the supporting member, said attaching member clamping the inner end of the insulator to said supporting member.

In testimony whereof I. have hereunto set my hand.

a JAMES B. MCCARTHY. Witnesses:

PAUL M. CRrroHLoW, FRANCIS J. TOMASSON. 

